[ninf,fpeak]
= hinfnorm(___) also returns the frequency, fpeak,
at which the peak gain or largest singular value occurs. You can use
this syntax with any of the input arguments in previous syntaxes.
If sys is unstable, then fpeak = Inf.

Input Arguments

sys — Input dynamic systemdynamic system model | model array

Input dynamic system, specified as any dynamic system model
or model array. sys can be SISO or MIMO.

tol — Relative accuracy0.01 (default) | positive real scalar

Relative accuracy of the peak gain, specified as a positive
real scalar value. hinfnorm calculates ninf such
that the fractional difference between ninf and
the true H∞ norm
of sys is no greater than tol.

Frequency at which the peak gain or largest singular value occurs,
returned as Inf, a nonnegative real scalar value,
or an array. The frequency is expressed in units of rad/TimeUnit,
relative to the TimeUnit property of sys.

If sys is a single stable model,
then fpeak is a scalar.

If sys is a single unstable model,
then fpeak is Inf.

If sys is a model array, then fpeak is
an array of the same size as sys.In this case, fpeak(k) is
the peak gain or largest singular value frequency of the kth
model in the array.

This website uses cookies to improve your user experience, personalize content and ads, and analyze website traffic. By continuing to use this website, you consent to our use of cookies. Please see our Privacy Policy to learn more about cookies and how to change your settings.